Should the location of `~xx` include `~` ?

[cristianoc]

See https://github.com/rescript-lang/rescript-vscode/pull/247

[IwanKaramazow]

Hmm, I see what you're getting at. Labels don't currently have a location in the ast. For the printer we need a location, so we parse an extra attribute ns.namedArgLoc. This attribute contains the exact location of the label. Do we still have this available in the typed tree?

[cristianoc]

In the typed tree, this looks like Tpat_var "xx". And currently the location range of xx includes ~. The parser must create that location range somewhere, or it would not show up.

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